Bucky laughed, a small chuckle coming out, the first honest and real one he'd had in quite a while. He couldn't help but smile, imagining Loki flinging knives at this imaginary brother of his. If that didn't define sibling rivalry, he didn't know what would. Most siblings do fight, but with knives?

His smile faded when Loki kept talking. "Wait, what?" He swallowed, his good hand reaching out to press palm side against the wall. Three others were from his world. And Steve was one of them. Did that mean he was from Loki's world too? He froze staring at Loki in shock. Steve was here? "Uh... Huh. Um," he stammered. "Yes, that... That's his name."